Crystal Set FM DC #31, 72.410
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This crystal set is suitable for all Futaba FM, Dual Conversion radio systems and comes with a transmitter crystal and a receiver crystal.
It is recommended that you do not move your system's operating frequency any more than half a MHz (500kHz) without having your system retuned.
This is a replacement crystal set for all new narrow-band, dual conversion, FM and PCM Futaba radio systems. Includes 2 crystals. Use this crystal set for the R127DF, R127DP, R124DP, R128DF, R128DP and R129DP receivers only. KBR 1/11/92